Normalised redshift distributions of XMMPZCAT sources. Left panel: full catalogue, with no filtering. Right panel: sources with peak strength greater or equal than 0.7 (see Sect. 5.1) and not classified as stars (see Sect. 5.2). The filled histogram shows the normalised distribution using the most probable redshift (the mode) for each source. Lines show the probability density of the sample estimated by adding all the corresponding PDFs. Red lines correspond to extended sources, blue lines to point-like sources. Solid lines represent ARCHES samples, dashed lines the Pan-STARRS samples. Dotted, black line represents the whole sample.
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